The equation b=540−30m gives the balance b (in dollars) that you owe on a drum set after m monthly payments. what is the balance after 9 monthly payments?

the balance after 9 monthly payments is, $270

Step-by-step explanation:

Given the equation:

             ....[1]

where,

b represents the balance in dollars that you owe on a drum set after m monthly payment.

We have to find the balance after 9 monthly payments

⇒ m = 9 months

Substitute the given values in [1] we have;

⇒

Therefore, the balance after 9 monthly payments is, $270

i think it is everything has to equal 180 so, if i correct 4=c. 6=d. 8=a. 7=b. and the last question would be c. because they are parallel lines and they are congruent.

step-by-step explanation:

the reason everything has to equal to 180 is because that is how it works. i'm guessing that is its rule. 4 and 8 are congruent and parallel so, that would be 30+30 because they have the same number. it would equal 60. 6 and 7 are congruent and parallel so, that would be 30+30 because they have the same number. it would equal 60. 60+60 is 180. so, now you have your answer